Stapling-machine.



R. PARSONS.

STAPLING MACHINE.

APPLICATION FILED.SEPT.1, ms.

1,238,327. I Patented Aug. 28, 1917.

3 SHEETSSHEET I.

R/chMo/va pARSOIVS.

R. PARSONS.

STAPLING MACHINE.

APPLICATION FILED SEPT. 1, 1916.

Patented Aug. 28, 1917.

3 SHEETS-SHEET 2.

ZIYLUMITOT R. PARSONS.

STAPLING MACHINE.

APPLICATION FILED SEPT. I, 1916.

1,238,327. Patented Aug. 28, 1917.

3 SHEETS-SHEET 3.

R/bhmo/m Rraoms.

TED STA RIGHMOITI? PARSONS, F PHILADELPHIA, PENNSYLVANIA.

STAPLING-MACHINE.

Specification of Letters Patent.

Application filed September 1, 1916. Serial No. 118,119.

To all whom it may concern:

Be it known that I, RICHMOND Parsons, a citizen of the UnitedStates,residing at Philadelphia, in the county of Philadelphia and Stateof Pennsylvania, have invented certain new and useful ,Improvements instapling-Machines, of which the following is a specification.

My invention consists of improvements in stapling mechanism, and isparticularly serviceable for securing together the hoops and slats ofbaskets. However, it will be understood that it may be usedadvantageously for other purposes.

One object of my invention is to provide mechanism which will form andinsert staples which efiectively bind together the members into whichthey are inserted.

Another objectis to so make the ends of said staples that they will notproject beyond the materiaL into which the staples are inserted, thuspreventing injury to the hands of any one who handles articles havingstaples made and inserted by my improved mechanism. 7

Another .object is to make my improved mechanism positive in its actionand of comparatively simple construction.

A still further object is to provide mechanism which will prevent wasteand insure a far greater proportion of perfect work than other staplingmachines now on the market.

These objects, and other advantageous ends which will be describedhereinafter, T attain in the following manner, reference being had tothe accompanying drawings in which Figure 1 is a front elevation of myinvention.

Fig. 2 is an enlarged front elevation on I an enlarged scale showing thestaple forming mechanism.

Fig. 3 is a fragmentary elevation, of similar nature to the bottomportion of Fig. 2, showing certain of the elements in difierentpositions and including the staple and staple wire in certain positionswhich they assume during the operation of my invention. 7

Fig. 4 is a sectional elevation on the line aa of Fig. 2.

. Fig. 5 is. a section on the line bb of Fig. 2 showing certain of theelements in outside view.

. Fig; 6 is a fragmentary elevation partly in section showing a certainfeature of my invention.

Fig. 7 is a sectional view of a bracket which I employ, said sectionbeing taken on the line 0-0 of Fig. 1, the supported. parts beingomitted.

Patented Aug. as, tart.

Referring to the drawings, lis asupporting rail which may be attached toa frame or other supporting structure (not shown). This rail is providedwith a groove 2 for receiving a tongue or rib 3 on a bracket 4:, thelatter being secured by a bolt 5 'to said rail 1, said tongue and grooveacting to prevent lateral movement between the bracket 4 and rail 1.

The bracket 4; is recessed at 6 to form-a slide-way for a verticalreciprocatingplate is designed to slide within the recess 6 di: 7

rectly in front'of the plate 7 and as will hereinafter be more fullyexplained, the plates 7 and 13 operate simultaneously throughout aportion of their respective movements.

The recess 6 and the cover 8 thus form a housing for the plates 7 and13, and the hammer 10.

The upper end of the late 7 has connected to it a bolt 15 whic passesthrough a bracket 16 which is supported on a bar 17. This bolt 15'has' acoiled spring 18' which is positioned between. the lower face of thebracket 16 and nuts 19 carried b said bolt 15. The upper end of saidbolt is provided with nuts 20 which engage the outer surface of thebracket 16.

The bar 17 is moved upwardly and downwardly by means of an eccentric 21which is secured to a shaft 22 mounted inthe main frame of the machine.

Eccentric straps 23 engage the eccentric 21, and the lower of saidstraps has an arm 24 which is pivotally secured at 25 to upwardlyprojecting ears 26 on the bar 17. Ilhis construction permits a positiveupward movement of the plate 7, and a slightly resilient downwardmovement of said plate.

The spring 18 is made suiiiciently heavy, however, that the knife 14will receive Suthcient power to shear the staple wire as will be morefully explained hereinafter.

l he upper edge of the plate 13 is recessed at 27 to form a pivotalbearing for a latch plate 28. This latch plate has a curved lower edgesurface 29, and is notched at 30. A. pin 31 extends upwardly from theplate 13 into the notch 30 to prevent a longitudinal movement of thelatch within the re-' eess 27.

The upper portion of the latch 28 has connected to it one end of acoiled spring 32, the other end of said spring being securedto a screwbolt 33 attached to the upper end of the plate 7.

The plate 7 has an angular groove 34 into which an angular extension 35of the latch plate 28 projects and is held therein through the torsionalaction of the spring 32 (see Fig. 4). The latch 28 also has twoextensions 36, each of said extensions having a cam face 37 designed toengage the upper ends of two rods 38 which are secured in the upperportion of the bracket 4. These rods 38 are so positioned as to engagethe cam faces 37 of the latch 28 and deflect said plate against theaction of the spring 32, said deflection being sufficient tomove theextension 35 of the latch plate out of th angular groove 34, (see Fig.6).

The rear surface of the plate 7 is pro vided with a cam block 39 havingan inclined upper surface 40. A forming lever 41 is pivoted at 42intermediate of its ends, and has an arm 43 designed to be engaged bythe cam block 39 so as to push a forming finger 44, which is positionedat the lower end of the lever 41, into a position between the coverplate 8 and the bracket 4 as clearly shown in Fig. 4, this movementbeing accomplished against the action of a spring 45 which tends at alltimes to move the forming finger outwardly and simultaneously move thearm 43 toward the plate 7.

The forming finger 44 is providedwith a gage pin 46 which ispositionedtothe rear. of the front edge surface 47 of the forming finger44. The function of this pin will be described hereinafter. I

The plate 13 has an opening 48 in which the hammer head 12 slides. Theplate 13 also has an opening 49 which is grooved at 50 on oppositesides, and in which ribs 51 on the hammer 10, project and slide.

The grooves 50 communicate with the grooved lower end 52 of the plate13, said teases? groove 52 terminating at the ends to form the knifeedges 14. p

A wire guiding tube 53 communicates with the space between the cover 8and the portion of the bracket 4 which forms the recess 6, and serves todirect the staple wire across the recess 6 and above the forming finger44.

Guard blocks 54 are positioned within said recess and serve inconjunction with the pin 46 to confine the wire directly below thegroove 52 within the plate 13, and also directly under the end of thehammer 10.

An upper feed roll 55 is pivoted on the bracket 4 and has its peripheralsurface grooved at 56 (see Figs. 4 and 5).

A ratchet wheel 57 is secured to the feed roll 55 and is operated by apawl 58 pivoted at 59 on a bracket 60, the latter being adj ustablysupported on an arm 61, the latter receiving movement from a cam 62 onthe shaft 22-. The operating connection between the cam 62 and the arm61 consists of an anti-friction roller 63 mounted on a yoked arm 64, thelatter being positioned to straddlet-he shaft between the cam 62 and acollar 65 on the shaft 22.

A bar 66 connects the yoked arm 64 with the arm 61, said cam acting tomove the arm 61 downwardly, thereby causing the pawl 58 to engage andintermittently rotate the ratchet wheel 57.; The arm 61 may be raised byany suitable means, and in the present instance I have shown a spring 67secured to the yoke arm 64 and attached to a super structure (notshown).

The pawl 58 is held in engagement with the ratchet teeth through themedium of a spring 68 which is connected to the bracket 60. .4 lowerfeed roll 69 is rotatable on a stud 70 carried by a lever 71, the latterbeing pivoted at 72 to the bracket 4.

A tension spring 73 connects the lever 71 and tends to move the roll 69upwardly. A die block 74 is positioned between the bite of the feedrollers 55 and 69 and the wire guiding tube 53 and has a V-shaped groovein its upper surface as shown at 75.

A plunger 76 is movable vertically in guide members 77 which are securedto the bracket 4. lhis plunger is directly over the die block 74 and hasa depending projection 78 designed to engage the staple-forming wire 79(see Figs. 2 and 3) to form a V- shaped'bend in said wire as shown inFig. 3.

The plunger 76 receives its downward movement due to an engaging actionof a striking rod 80 carried by the bracket 16. The plunger 76 is movedupwardly, after being released by the striking rod 80, by a spring 81which has one end in engagement with the lower guide member 77 and theother end attached, to the plunger, the spring being compressed when theplunger mittently feed the wire a distance equal to that existingbetween the middle of the groove 7 and the edge 82 of the plate 13, andconsidering that the wire is in the position shown in Fig. 3, and thatthe plunger and plates 7 and 13 are in the positionshown in Fig. 2, theoperation is as follows:

The arm 61 descends due to the action of the'cam 62 and efiects themovement of the upper feed roll to feed the bent wire in the directionof the arrow shown in Fig. 3, it being noted that the previous severingof the wire through the middle of the ll-shaped bent portion caused theend 84 of the wire to assume the shape shown in dotted lines in saidFig. 8. This feeding movement of the wire causes the bent portion to bepositioned directly below the lefthand knife edge 14, so that as thelatter descends, it will shear the wire directly in the middle of saidbent portion forming an end similar to that shown at 84 in Fig. 3. a

After the wire has been fed into said position, the timing'of theeccentri 21 is such as to move the bar 17 downward y and efiect' thedownward movement of the plates 7 and 13, the latter receiving itsmovement through the medium of the latch plate 28. This downwardmovement continues until after the wire is severed.- The cam faces 37 onthe extensions 36 then engage the latchdefiecting rods 38 and cause saidlatch to be moved out of engagement with the angular groove 34. Theplate 7 continues to move downwardly and with it the hammer 10, theforming finger 44 having been moved into position to receive the severedwire on its upper surface, immediately to the front of the pin 46.

The plate 13 also continues downwardly, said downward movement beingefiected through the medium of the spring 32. This movement of the plate13 bends the wire over the forming finger 44 and into an invertedU-shape. The grooves 50 act to receive the leg portions of the staplethus 7 stormed.

The members of the article into which the staple is to be inserted, arepositioned directly underthe bracket 4 and an anvil of any descriptionmay be placed below the article which is to be stapled.

The plate 13 continues to move downwardly until its bottom edge engagesthe article into which the staple is to be inserted, further downwardmovement of said plate 13 being thus prevented due to the resilientproperty of springs 32. The hammer, howto the engagement of the staplewith the hammer, the forming finger 44 is moved rearwardly by the spring45, since by this time the cam block has moved below the arm 43, so thatthe latter is permitted to move the required distance to permit theoutward movement of the forming finger 44.

By this construction, it will be noted that the grooves serve to holdand guide the legs of the staple and that the ribs 51 on the hammer actto apply pressure in direct alinement with the legs of the staple, thebody portion ofv the hammer acting to 911-: gage the central portion ofthe staple.

Furthermore, with this construction it is I practically impossible toshear through the head of the staple as is common in other staplingmachines made prior to my present invention, since with my'improvedconstruction, pressure is applied throughout the entirehead of thestaple so as to impart an ever, continues to descend andjust previouseven inserting or driving movement to the Y staple.

It will be understood, as shown in Fig. 3, that by forming the ii-shapedbend in the wire by means of the plunger '?7 6, and die block 74, and bysevering the wire in the middle of this bent portion, 'inturned endportions are provided which, when the staple is driven into an articleand engages the anvil, these turned edges will be deflected so as topractically reenter the article thus avoiding sharp end portions andpreventing injury to the hands or clothing of a person who handles saidarticles.

After the staple has been inserted as above described, the plates 7 and13 ascend and the arm 43 is moved outwardly by engagement with the camface 40 of the cam block 39 to cause the forming finger 44 to be againmoved into operative position to receive the next staple.

Tt will be noted that the pin 46 and the guard blocks 54' act to confinethe wire and length of the wire which has been bent as above described,said bend in the wire being formed when the bar 17 moves downwardly tocause engagement between the striking rod 80 and the plunger 76.

In the foregoing description I have described the arm 61 as beingactuated by the cam 62 through the medium of the bar 66. It will benoted, however, that the drawings illustrate but one unit in a basketmaking machine and any number of units may be included according to thenumber of hoops to be secured to the basket. It will thus be noted thatthe shaft 22, bar 17, and arm 61 extend throughout the length of themachine and support and operate a number of the elements comprising theseparate units. For example, the arm 61 is supported at its opposite endby another bar similar to the bar 66, said latter bar being operated bymeans of another cam on the shaft 22, said other cam being similar tothe cam 62 illustrated.

Nhile l have described my invention as taking a particular form, it willbe understood that the various parts of my invention may be changedWithout departing from the spirit thereof, and hence 1 do not limit myself to the precise construction set forth, but consider that I am atliberty to make such changes and alterations as fairly come within thescope of the appended claims.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent is:

1; The combination in a stapling mechanism, of wire-feeding mechanism,means for forming a ii-shaped bend in the wire, means for severing thewire through the bent portions, and means for forming the severed wireinto a staple, substantially as described.

2. The combination in a staplin mechanism, of Wire-feeding rolls, meansIor forming a V-shaped bend in the wire, a knife, means for moving saidfeed rolls to feed a predetermined length of the wire to move the bentportion into alinement with the knife, means for moving the knife tosever the wire at the bent portion, a d meansfor forming the severedwire into a staple, substantially as described.

3. lhe combination in a stapling mecha nism, of wire-feeding means,means for forming a ll-shaped bend in the wire, a knife, means foractuating said feeding means to feed a pre-determined length of wire tomove the bent portion into alinement with the knife, means for movingthe knife to sever the wire at the bent portion, a forming member, meansfor bending the wire over said forming member to form a staple, andmeans for driving said staple, substanti ally as described.

4. The combination in a stapling mechanism, of wire-feeding means, meansfor forming a V -shaped bend in the wire, a movable plate having a knifeedge designed to severv said wire through the bent portion, said platebeing provided with an opening and having grooves at each side of saidopening, a hammer movable within said opening nae-Jena? and having ribsslidable within said grooves, a staple forming finger in alinement withsaid opening, said staple forming finger being positioned to receive theWire thereover, said wire being bent by the cooperating portions of saidplate and of each staple forming finger, means for moving said fingerout of alinement with said opening in the plate, and means for movingsaid hammer to drive the staple, substantially as described.

5. The combination in stapling mechanism, of means forming a slide-way,means for forming a ii-shaped bend in the wire, means for feeding saidwire to said forming means and then into said slide-way, a plateslidably fitting said slide-way and having a central opening and groovesat opposite sides of said opening, a hammer slidably fitting saidopening and having ribs movable within said grooves, said plate having aknife edge adjacent one side of the slide-Way to sever the wire at thenicked portions, a staple forming member in alinement with said opening,said plate being movable to bend the staple over said forming member andto permit the leg portions ofsaid staple to enter the grooves, saidforming member being movable out of alinement with said opening afterthe legs of the staple are positioned Within the grooves, and means formoving the hammer within the opening to engage and drive the staple,substantially as described.

6. The combination in a stapling mechanism, of a movable member providedwith a groove, a hammer thereon, a member hav-.

ing a latch normally engaging said groove to form a positive movableconnection between said members to cause said members silient means'connecting said second mem her with the first member, and operativeafter the positive disconnection between the members to cause movementof said second member, substantially as described.

7. The combination in a stapling mechanism, of rolls for feeding staplewire, a die block having a notch therein, means for moving said feedrolls to feed the wire over the notch in the die block, means movableinto engagement with the wire to press portions thereof into the notchto form a V- shaped bend therein, means for severing the wire throughthe bent portion, and means for making a staple from the severed wire,substantially as described.

8. The combination in a stapling mechanism, of rolls for feeding maplewire, a die block having a notch therein, a plunger, means for movingsaid feed rolls to feed the wire between the plunger and the notch inthe die bloek; means for moving said plunger to press portions of theWire into the notch to makeaV-shaped bend in the Wire a knife operativeto sever the Wire at said bent portion, and means for making a staple ofthe severed Wire, substantially as de-. scribed.

9. The combination in a stapling mechanism, of feed rolls for the wire,a die block having a notch over 'Which the Wire is fed, a plunger havinga depending projection movable to engage and make a V-shaped bend insaid Wire and force a portion into the notch of said die block, a knifeopen ative to sever said Wire in the middle of said notched portion, andmeans for making a staple from the severed Wire, substantially asdescribed.

10. The combination in a stapling mechanism, of means for feeding thestaple Wire, notched die block over which the Wire is by said feedingmeans, a member having a projeotion, operative in conjunction with thenot-h in the die block to make a J-shaped bend in the Wire, a memberhaving 25 Wire-engaging portion of said die block to 30 act as a passagefor said Wire after it is bent and during its movement across saidslide-Way, means for causing the knife edge to cut the Wire and meansfor forming a staple from the severed Wire, substantially 35 asdescribed.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing Witnesses.

EECHMUND PARSONS.

Witnesses:

GEORGE JoaA, KEMME,

